Planar circularly polarized X‐band array antenna with low sidelobe and high aperture efficiency for small satellites

2019 ◽  
Vol 29 (11) ◽  
Author(s):  
Son Xuat Ta ◽  
Van Du Le ◽  
Khac Kiem Nguyen ◽  
Chien Dao‐Ngoc
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
Small Satellites ◽  
Aperture Efficiency ◽  
Low Sidelobe ◽  
X Band

A low sidelobe level of circularly polarized microstrip array antenna for CP-SAR sensor

2013 ◽  
Vol 27 (15) ◽  
pp. 1931-1941 ◽  
Author(s):  
Mohamed Hussein ◽  
Yohandri ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Ashraf Yahia
Keyword(s):  
Array Antenna ◽  
Sidelobe Level ◽  
Circularly Polarized ◽  
Low Sidelobe ◽  
Microstrip Array ◽  
Microstrip Array Antenna

scholarly journals X-Band Dual Circularly Polarized Patch Antenna With High Gain for Small Satellites

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 74925-74930 ◽  
Author(s):  
Paolo Squadrito ◽  
Shuai Zhang ◽  
Gert Fraolund Pedersen
Keyword(s):  
Patch Antenna ◽  
High Gain ◽  
Circularly Polarized ◽  
Small Satellites ◽  
X Band

A low-sidelobe and wideband dual linearly polarized array antenna for UAV SAR application in X-band

2021 ◽  
pp. 1-12
Author(s):  
Seong-Ju Lim ◽  
Jeong-Wook Kim ◽  
Sol Kim ◽  
Hyunyoung Cho ◽  
Jong-Won Yu ◽  
...  
Keyword(s):  
Array Antenna ◽  
Low Sidelobe ◽  
X Band ◽  
Linearly Polarized

scholarly journals High-Efficiency Broadband Planar Array Antenna with Suspended Microstrip Slab for X-Band SAR Onboard Small Satellites

Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 252
Author(s):  
Kyei Anim ◽  
Patrick Danuor ◽  
Seong-Ook Park ◽  
Young-Bae Jung
Keyword(s):  
High Efficiency ◽  
Middle Layer ◽  
Array Antenna ◽  
Bottom Surface ◽  
Impedance Bandwidth ◽  
Small Satellites ◽  
Dielectric Substrates ◽  
X Band ◽  
Parasitic Patch ◽  
Planar Array

In this paper, a high efficiency broadband planar array antenna is developed at X-band for synthetic aperture radar (SAR) on small satellites. The antenna is based on a multi-layer element structure consisting of two dielectric substrates made of Taconic TLY-5 and three copper layers (i.e., the parasitic patch (top layer), the active patch (middle layer), and the ground plane (bottom layer)). The parasitic patch resides on the bottom surface of the upper TLY-5 substrate while the active patch is printed on the top surface of the lower substrate. A Rohacell foam material is sandwiched between the top layer and the middle layer to separate the two dielectric substrates in order to achieve high directivity, wideband, and to keep the antenna weight to a minimum as required by the SAR satellite application. To satisfy the required size of the antenna panel for the small SAR satellite, an asymmetric corporate feeding network (CFN) is designed to feed a 12 × 16 planar array antenna. However, it was determined that the first corporate feed junction at the center of the CFN, where higher amplitudes of the input signal are located, contributes significantly to the leaky wave emission, which degrades the radiation efficiency and increases the sidelobe level. Thus, a suspended microstrip slab, which is simply a wide and long microstrip line, is designed and positioned on the top layer directly above that feed junction to prevent the leaky waves from radiating. The experimental results of the antenna show good agreement with the simulated ones, achieving an impedance bandwidth of 12.4% from 9.01 to 10.20 GHz and a high gain above 28 dBi. The antenna efficiency estimated from the gain and directivity eclipses 51.34%.

scholarly journals CIRCULARLY POLARIZED ARRAY ANTENNA USING THE SEQUENTIAL ROTATION NETWORK FEEDING FOR X-BAND COMMUNICATION

2019 ◽  
Vol 94 ◽  
pp. 203-217 ◽  
Author(s):  
Farohaji Kurniawan ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Koichi Ito ◽  
Steven Gao ◽  
Good Fried Panggabean ◽  
...  
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
X Band
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